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Author 2521 router
tommy camera

2003-12-26, 8:24 pm

What is the difference between the 2520 and the 2521 Cisco routers. Are the
"low-speed serial(sync/async) the same as the regular serial ports on all
2500's. I have 3) 2503's with two serial ports - are the low-speed ports the
same.
Can I use the 2521 as a frame relay switch without any additional cables and
configurations.


Brad

2003-12-26, 11:24 pm

The only difference between a 2520 and 2521 is that the 2520 has an ethernet
interface, whereas the 2521 has a token ring interface. Both will work
great as a frame-relay switch as long as you dont need more than 4 devices
hanging off your frame cloud. If you do, then I suggest a 2522 or a 2523.
The low speed ports on the 2520, 2521, 2522, and 2523s will only allow a
clock rate up to 115,200. It really shouldnt make a difference in your CCxx
home lab.

thanks,
-Brad Ellis
CCIE#5796 (R&S / Security)
Network Learning Inc
brad at eccie.com
www.ccbootcamp.com/quicklinks.html (Cisco Training)
www.routerie.com (Cisco R&S CCIE Discussion groups)
www.securityie.com (Cisco Security CCIE Discussion groups)
www.optsys.net (Cisco hardware)

"tommy camera" <camera_tommy@hotmail.com> wrote in message
news:yY4Hb.62179$0P1.24377@twister.nyc.rr.com...
> What is the difference between the 2520 and the 2521 Cisco routers. Are

the
> "low-speed serial(sync/async) the same as the regular serial ports on all
> 2500's. I have 3) 2503's with two serial ports - are the low-speed ports

the
> same.
> Can I use the 2521 as a frame relay switch without any additional cables

and
> configurations.
>
>



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